diff -NaurEb linux-2.6.6ct/drivers/net/wireless/prism54/isl_ioctl.c linux-2.6.6-01/drivers/net/wireless/prism54/isl_ioctl.c
--- linux-2.6.6ct/drivers/net/wireless/prism54/isl_ioctl.c	2004-05-28 14:40:26.990455656 +0200
+++ linux-2.6.6-01/drivers/net/wireless/prism54/isl_ioctl.c	2004-05-28 14:43:00.926053888 +0200
@@ -1893,6 +1893,7 @@
 	struct net_device *ndev = frame->ndev;
 	enum oid_num_t n = mgt_oidtonum(frame->header->oid);
 
+	if (n != OID_NUM_LAST)
 	prism54_process_trap_helper(netdev_priv(ndev), n, frame->data);
 	islpci_mgt_release(frame);
 }
diff -NaurEb linux-2.6.6ct/drivers/net/wireless/prism54/oid_mgt.c linux-2.6.6-01/drivers/net/wireless/prism54/oid_mgt.c
--- linux-2.6.6ct/drivers/net/wireless/prism54/oid_mgt.c	2004-05-28 14:40:27.001453984 +0200
+++ linux-2.6.6-01/drivers/net/wireless/prism54/oid_mgt.c	2004-05-28 14:43:00.929053432 +0200
@@ -688,13 +688,13 @@
 {
 	int i;
 
-	for (i = 0; i < OID_NUM_LAST - 1; i++)
+	for (i = 0; i < OID_NUM_LAST; i++)
 		if (isl_oid[i].oid == oid)
 			return i;
 
 	printk(KERN_DEBUG "looking for an unknown oid 0x%x", oid);
 
-	return 0;
+	return OID_NUM_LAST;
 }
 
 int